>From the nimble fingers of Robert Covington (artlythere@...)
>(20/12/2001 9:51 AM) came...
>
>>> Was I mistaken in thinking that a saved FFT'd image could be re-opened and
>>> de-FFT'd?
>>
>> Yep. :)
>>
>> It is just an image maker, not a storage medium.
>>
>If - as we now know - it is possible to FFT an image, why does the converse
>not work. Is the raw material for your de-FFTer something other than the
>image shown? If so, my unflinching trust in you has taken a nasty hit.
>--
>Ted Spencer; ted@...

Yes, the raw material for the reverse transform) is not even the image you
see. It is the array derived from the forward transform. That is why doing
a reverse does nothing if the forward hasn't been done yet.

The reason you don't get the same image back out from some transformed
randomly re-loaded by Files$ image is that you don't have the reals and
complex numbers used to create it. The image you see is just a metaphor for
the array in memory, not the actual goods.


You can still trust me. It has been a rough week. Don't bum me out.

Robert